Wreck Documentation
Wreck survey and 3D documentation of historical, environmentally hazardous or recently sunk wrecks — measurable records for agencies, researchers and remediation contractors.
View the area →what others cannot see.
Measurable data, visual deliverables — ready to deploy worldwide.
Underwater photogrammetry · Digital twins · Global assignments
Active site model · OD‑0421 Live
M/S Estonia
Baltic Sea · 2022 · Commissioned by SHK
- Depth
- 80m
- Output
- 3Dmodel
- Photos
- 45k
- Method
- ROV
Real data — not CGI
From sonar to digital twin
Everything we show is built from real, measurable survey data. Drag the sliders and follow the same wreck from acoustic sonar (MBES) through mesh and textured model to a finished visualization.
— 01 / 05
UK MOD assignment · 2025
HMS Cassandra mapped in forensic detail.
The British cruiser struck a German mine in 1918 and rests today at over 90 metres depth — a leaking war wreck and the last resting place of those who died. In 2025 Ocean Discovery, via Waves Group, built a measurable digital twin for the UK Ministry of Defence's SALMO Wreck Management Programme.
Photogrammetric documentation · 2025
Multibeam and photogrammetry — fused into one digital twin.
Acoustic sonar and millimetre-resolution photogrammetry fused into a single georeferenced dataset, the two methods validating each other. The result: a measurable basis for wreck management — with UXO located on board.
- Depth
- 90m
- Sank
- 1918
- Mapped
- 2025
— 02 / 05
Field experience
Precise data, for difficult sites.
Ocean Discovery has contributed to major shipwreck discoveries and advanced documentation projects, from the Mars warship to the Swedish hazardous-wreck programme.
- Operating since
- 1995
- Hazardous wrecks
- 19
- Archaeological wrecks
- 12
- Max resolution
- 1.2mm
- Max depth
- 180m
Diving company and trimix pioneers.
Documented with photogrammetry.
From the 4th to the 19th century.
Point density on M/S Estonia model.
Malmi — deepest oil remediation in Swedish waters.
— 03 / 05
Recent assignment
M/S Estonia documented in 3D.
One of the world's most detailed photogrammetric wreck surveys. Ocean Discovery's 3D model became the documented basis for the Swedish Accident Investigation Authority's M/S Estonia final report (2025).
Field study · 2022
The model behind the official final report.
In summer 2022 we documented the wreck with ROV and photogrammetry — around 45,000 images covering about 95% of the hull, merged into a dimensionally accurate 3D model. On it, the accident authority identified the wreck's damage and concluded the hull is intact but for a single crack.
- Depth
- 80m
- Photos
- 45k
- Year
- 2022
— 04 / 05
Ongoing HaV programme
Hazardous wrecks documented for remediation
Since 2018 Ocean Discovery has documented 19 hazardous wrecks along the Swedish coast — basis for the Swedish Agency for Marine and Water Management's programme together with remediation contractor JD-Contractor.
Ongoing programme
Ticking environmental time bombs — 19 wrecks along the Swedish coast.
Corrosion continuously weakens the wrecks. Ocean Discovery delivers georeferenced 3D documentation, photogrammetry and sonar data used directly in remediation planning and offshore operations. Result so far: more than 558,000 litres of oil removed from Swedish waters.
- Wrecks
- 19
- Oil recovered
- 558k L
- Since
- 2018
— 05 / 05
Methodological origin
Mars Makalös where the method was born.
King Erik XIV's flagship sank in 1564 and was rediscovered in 2011 at 75 metres depth northeast of Öland. The Mars project became the genesis of Ocean Discovery's photogrammetry at extreme depth — the method the company uses today from Estonia to Franken.
Field study · 2011–ongoing
The method that changed marine archaeology.
Twenty years of searching, an international dive team, 50,000+ photographs, and a 3D model on which the entire scientific reconstruction rests.
- Depth
- 75m
- Sank
- 1564
- Photos
- 50k+
— Clients
-
Swedish Accident Investigation Authority
Photogrammetry of M/S Estonia, 2022.
-
Swedish Agency for Marine and Water Management
Hazardous wrecks — ongoing programme 2018–2025.
-
UK Ministry of Defence
HMS Cassandra — wreck documentation, 2025.
-
Gdynia Maritime University
Franken — wreck documentation in Gdynia.
Areas of expertise
Four domains where precision makes the difference.
Different missions, same foundation: a digital twin of the site — a measurable, geo-referenced 3D model ready for analysis, decisions and documentation.
Ports & Infrastructure
Quay inspection, bridge inspection and 3D documentation of ports, tunnels and underwater structures — without divers, with traceable precision for management and engineering.
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Offshore & Energy
Seabed survey and pre-construction investigations for offshore wind farms, subsea cables and pipelines. Measurable records directly usable in construction planning and environmental impact assessment.
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Search & Investigation
Underwater search operations, accident investigation and wreck identification. We search, locate and identify lost objects, unidentified wreck anomalies and unclear accident sequences — from historical shipwrecks to modern inquiries.
View the area → 01Photogrammetry02ROV inspection03Side scan sonar04Marine archaeology05Water sampling06Ultrasound thickness073D visualisation08Point cloud (LAS/E57)
Process
A clear path from site question to delivery.
Four steps, same rhythm since 1995. No black box — you see exactly what the team does and why.
01 · Define
01
Define the site question
We align on location, water conditions, risk, access, documentation needs, and decision criteria.
02 · Capture
02
Capture the underwater data
ROV, sonar, photography, sampling, and measurement workflows are selected for the mission.
03 · Process
03
Process into usable outputs
Raw capture becomes a digital twin — models, imagery, maps, measurements, and visualizations your team can use.
04 · Deliver
04
Deliver and interpret
Final files are packaged for stakeholders, investigators, researchers, or public communication.
— Watch our work
Two minutes underwater photogrammetry.
From field to finished 3D model — see how a project goes from first frame to final delivery.
Next site question
Bring clarity to your next underwater project.
Share the site, the challenge, and the output you need. Ocean Discovery AB is based in Västervik, Sweden.